Guides·27 August 2026

A Guide to Stopping Kill-Chain Ransomware with a Control Blueprint

How Control Blueprint CP-01 uses Control Modules to stop ransomware moving, spreading or reaching the crown jewels, what good looks like, and how a deployment is scoped.

Mark Fermor
Mark FermorDirector & Co-Founder, Firevault
3 min read
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A Guide to Stopping Kill-Chain Ransomware with a Control Blueprint
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Why it matters

What this means for organisations holding critical data

How Control Blueprint CP-01 uses Control Modules to stop ransomware moving, spreading or reaching the crown jewels, what good looks like, and how a deployment is scoped.

About this guide

This guide is written for security, infrastructure and risk leaders who need to stop ransomware moving, spreading or reaching the crown jewels. It explains one Control Blueprint, CP-01, in plain terms: the failure it addresses, the Control Modules it uses, how those modules work together, and how a deployment is scoped.

Control by Firevault is a suite of nine purpose-built modules: a set of tools and techniques that give you physical control over the paths into and across your estate. A Control Blueprint is a proven combination of those modules assembled for a specific outcome. This guide covers one blueprint. The Control overview covers the nine modules and the full set of blueprints.

The problem this blueprint addresses

Ransomware rarely succeeds at the point of entry. It succeeds in the movement that follows: credential reuse, lateral hops between zones, and a clear path to the systems that matter most. Logical segmentation and policy alone do not stop that movement once an attacker holds a valid session.

CP-01 at a glance

  • Lead layer FIRE
  • Primary modules Firebreak, Isolate, Execute
  • Supporting modules Unlink, Lock
  • Typical sectors Financial services, healthcare, public sector and defence

The primary modules

These modules do the work the blueprint is named for.

  • Firebreak physically breaks the connection path, so a route only exists when it is deliberately opened.
  • Isolate separates an environment at hardware level, so a compromised zone cannot reach a clean one.
  • Execute fires the control action on signal, without waiting for a change window.

The supporting modules

These modules round out the pattern and are usually added as the deployment matures.

  • Unlink removes the always-on dependencies that quietly tunnel between zones.
  • Lock holds access to the systems that matter behind identity and condition controls.

What good looks like

  • Movement between zones requires a physical path that is closed by default.
  • Containment is triggered by signal, not by a change request.
  • The crown jewels remain unreachable even when identity is compromised.
  • Every control action is recorded locally as evidence.

How the blueprint is deployed

Control Modules are a suite of tools and techniques deployed within your own estate and applied to the paths they govern: at a boundary, inside a zone, or at a third-party edge. Authorisation and evidence remain local, so losing connectivity to Firevault never opens a path.

Most deployments start with a single boundary or zone, prove the control behaviour, then extend the same blueprint across the estate. Modules can be customer-operated or co-managed.

How to scope it

Scoping starts with the paths, not the product. A short discovery exercise identifies the boundaries that matter, who needs to cross them, how often, and what evidence is required. That produces the module count and placement, which in turn produces the price. Blueprints are combined where an estate has more than one problem to solve.

Next steps

About the author

Mark Fermor

Mark Fermor

Director & Co-Founder

Co-founder of Firevault, focused on offline secure storage and protecting individuals and businesses from fraud, fines, loss and damage. Speaker, owner and advisor.

How Firevault would handle this

Access decided by you, not assumed by the network

Control by Firevault removes standing pathways and replaces them with connection windows you approve, so stolen credentials and compromised suppliers have nothing standing to abuse.

No standing accessPaths exist only when you open them
VerificationIdentity confirmed before any connection is made
ContainmentA compromised account cannot reach what is disconnected
ControlEvery window and closure is under your command
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